| 词汇 | backup |
| 释义 | backup | BrE ˈbakʌp, AmE ˈbækˌəp | noun ① uncountable (support) 支持 ; Military 增援 ▸ a backup team 增援队伍 ② countable (replacement) 备用物品 ; (person) 后备人员 ▸ a backup plan 备用计划 ▸ to keep a battery as a backup 留一节电池备用 ③ countable Computing (copy) 备份 ▸ a backup file 备份文件 |
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